Knighton News Network
“I would know because... I am your mother, Clay.”
“This is one of your spells. You're messing with my mind!”
“It's time you knew the truth... son.”
— Ruina and Clay in "Heart of Stone"

Wanda Moorington is the mother of Clay and Fletcher, sister to Merlok, and an experienced necromancer. After being corrupted by the evil of Monstrox, she went under the name of Ruina Stoneheart. She has a vehicle called the Capture Cruiser.


Prior to the series

Ruina Stoneheart was born as Wanda Moorington and is from Ghoulia.[2] Ruina was among the witches and wizards from the Wizards' Council. She often trained in magic with her brother, Merlok.[3] During this time, she had two sons, Clay and Fletcher,[1] with a knight.[4]

At this point, she struggled to contain the dark magic that was growing inside her planted by Monstrox.

After Monstrox's defeat

After Merlok was able to defeat Monstrox once and for all, Ruina's arm is seen picking up the bracelet of Forbidden Powers.[5]

After his defeat, Wanda turned to the dark side and adopted the name of Ruina Stoneheart. Merlok tried to save her from the growing evil, but was forced to turn her to stone as a last resort. During this time, Merlok took her son under his wing and brought him to Knighton.

Rock Bottom

Ava Prentis looked through the scrambled memories of Merlok and found a video of him defeating Monstrox and blasting him away. Ruina's arm is seen picking up a necklace left by him before the video cuts off.

Her petrified body was found by Gargoyles. Jestro thought it was one of Roberto Arnoldi's creations until the Cloud of Monstrox claimed that she wasn't, as she looked "particularly decent." Monstrox shocked her with his lightning, bringing her back to life. She thanked Monstrox and claimed his lightning was nice. Monstrox decided to give her a part in his plan and let her drive her Capture Cruiser to capture the queen. Jestro discouraged this plan because Ruina had been petrified for a long time, but Ruina told him that she was the "most evil thing in the kingdom."

Ruina led an army of Harpies and Gargoyles to capture the Queen while she was at an annual hammer throwing contest. Ruina kidnapped the queen and drove off into the distance. Macy Halbert chased after her with her Thunder Mace, but she crashed into a farm allowing Ruina to escape with the Queen. The Nexo Knights chased after her Capture Cruiser and this led the team away long enough for the Stone Monsters to raid the Fortrex and steal the Rogul containing the Forbidden Power of Blazing Burn.

Ruina led her Harpies and Gargoyles to fight the Knights including Macy and Clay whose Battle Suit was held by Hotspur. She drove them into a canyon. Ruina fought Clay with the lightning from her hair and her magic staff. Clay used a Nexo Power to fight the Gargoyles and petrify them. Clay attacked Ruina's Capture Cruiser, pushing it off the cliff with Ruina surviving and being caught by Gargoyles.

Weekend at Halbert's

Ruina stood among the Stone Monsters while Monstrox was growing into his Cloud form. Ruina stood beside Jestro and Garg on Jestro's Rolling Headquarters while the chased the Fortrex and were defeated by the students of the Knights' Academy.

The Gray Knight

Ruina is seen in the background of the Stone Monsters.

In His Majesty's Secret Service

When Clay infiltrated the Stone Monsters' base, Jestro noted that he should meet the other monsters. Ruina shook hands with Clay and energy traveled though their hands, affecting Clay's behavior for the worse. Afterwards, a fight between the Stone Monsters and the Nexo Knights broke out. Ruina briefly stunned Clay and he asked if he knew her. Ruina claimed that he already knew her, laughing. Later, Ruina stalked the Knights when they left and laughed evilly.

The Stranger in the Halps

While Clay Moorington meditates, he encounters Ruina in a dream-like state. Ruina tells him that he is not alone before blasting Clay with magic, causing him to wake up.


Ruina is seen in the background when Monstrox and Jestro find the Forbidden Power of Metal Morphosis. When the Stone Monsters allied with Jorah Tightwad, Ruina is seen with the other Stone Monsters. Ruina is seen again when the Stone Monsters and Krakenskull fight the Nexo Knights.

She watched Clay in enjoyment while he went on a rampage, destroying the Stone Monsters and the Forbidden Power of Petrifying Quake. Clay chased Ruina and the Stone Monsters through a forest, but was eventually stopped.

Heart of Stone

Ruina stood around a campfire with Monstrox and Jestro. The team realized they needed three more Powers to awaken the Stone Colossus. When Clay went rogue from the team to find and destroy Monstrox and Jestro, Ruina tried to lure Clay in with her magic.

However, the Nexo Knights told him the reading saying the Stone Monsters were there was false. Ruina laughed watching them leave. She returned to Jestro's Headquarters when Monstrox and Jestro were driving it through the kingdom, However, she laughed from the backseat.

Clay and Macy fought Ruina until Clay grabbed her and the two of them fell off the cliff. When they got up, Clay tried to attack Ruina but she blasted him again. Ruina then told Clay that she is his mother, which Clay did not believe, but was forced to leave by the Nexo Knights. Clay asked Merlok about Ruina and Merlok stated that it was true.

Between a Rock and a Hard Place

Merlok tells Ruina's backstory to the Nexo Knights by showing a slideshow of his past with her, as well as her past with Clay. Ruina laughed while watching Jestro and Monstrox released the Stone Colossus.

March of the Colossus

Ruina drives her Cruiser across the kingdom with the Colossus behind them. When the Nexo Knights attempted to attack the Colossus's head to destroy the Forbidden Powers, Ruina jumped onto the Flying Air Head with Jestro. They flew above the Colossus and Ruina used her magic to blast Axl causing him to fall into the Colossus's mouth. After defeating them, Ruina rides away with Jestro on his Rolling Headquarters.

The Fall

When Clay helped the Nexo Knights attack the crown, Ruina tried to attack him with her magic, but Lance used his shield to block the beam and flip the Flying Air Head. When the Colossus was destroyed and many of the Stone Monsters are turned to statues, Ruina evades petrification. While Jestro and Roberto Arnoldi are forced to clean up the mess caused by the crystalized pieces of the Stone Colossus. Ruina picks up a crystallized piece with a paw and green cloud on it and leaves while laughing.

Season 5: TerrorBytes

Ruina would go on to lead the Stone Monsters to battle the Nexo Knights as a distraction while she obtained the parts to create a spider-like device, abusing the Merry Mechs to make them build it for her. After it was fully built, Ruina placed the crystallized piece of the Colossus on it, bringing Monstrox back to life as a technological virus.

Ruina would also join Monstrox in battling the Nexo Knights, but this time, alongside the CyberBiters and Dragov, her old acquaintance. They would suck out the Nexo Powers from the system and begin to use them for themselves.

Abilities and weapons


  • Magic: Ruina is bestowed with the ability to use powerful magic that she trained with for over five hundred years with her brother, Merlok. She is able to cast powerful spells and shoot blasts from her staff, which she uses to channel her power.
    • Personality alteration: Using her magic abilities, Ruina was able to drive Clay mad and unlock the dark magic inside of him.
  • Electric hair: The electric bolts that shoot from Ruina's hair are able to reprogram squirebots to do her bidding.[6] description

Ruina Stoneheart is a witch with a surge of electrical magic running through her. This lady is charged and she will zap anything around until it is in her power. She serves Jestro and the Cloud of Monstrox, but there is something going on between her, Clay and Merlok 2.0. One must wonder who this wicked witch of the weather really is…[7]



Nexo Knights

Season 3: Storm Over Knighton

Season 4: The End

Behind the scenes

  • Her original name, Wanda, may be a pun on wands, referencing her innate magical abilities.
    • Her original name is also similar to a Marvel character who is also a witch, Wanda Maximoff.
  • In set form, her hair is much longer than it is in the show, as it reaches her torso unlike in the show, where it only reaches the end of her face.


  • In The Book of Monstrox, Ruina is seen to have naturally brown hair, which means that she passed down her hair color onto her two children, Clay and Fletcher.
  • As she is the sister of Merlok, this means that she is over five hundred years old, as they are said to have trained together since childhood.


Main article: Ruina Stoneheart/Gallery


view · talk · edit Characters
Nexo Knights: Merlok 2.0 · Clay Moorington · Lance Richmond · Aaron Fox · Macy Halbert · Axl · Robin Underwood
Allies: Ava Prentis · Jestro · King Halbert · Queen Halbert · Herb Herbertson · Alice Squires
Squirebots: Aaronbot · Axlbots · Chili Vanilla · Claybots · Cowbots · Éclair · Haute FancyPants · Kingbot · Lotta Fun · Lotta Budget · Macybot · Manuel · Persnickety Marge · Riccardo
Merry Mechs: Robot Hoodlum · Dennis · JohnBot
Knights' Academy: Beak · Brutzle · Captain Clash · Chef Munch · Ethan Zilgo · Fletcher Bowman · Griffiths · Izzy Richmond · Knightmares · Ottofae · Relik · Scapeland · Swordmore Brickland
Tighty Knighties: Jorah Tightwad · Shia LaBlade · Jousting Bieber · Brickney Spears · The Blok
Lava Monsters: Mayor Magmar · Beast Master · Lavaria · Whiparella · Moltor · Flama · Burnzie · Sparkks · Bookkeeper · Infernox · Ash Attackers · Crust Smashers · Flame Throwers
Stone Monsters: Monstrox · Stone Colossus · Ruina Stoneheart · Krakenskull · Garg · Roberto Arnoldi · Three Brothers (Roog · Reex · Rumble) · Harpies (Hilda · Ingrid · Ulrika) · Roguls · Gargoyles · Grimrocs · Stone Stompers · Stone Monster · White stone statue · Bedrock Monster
CyberBiters: Monstrox · Dragov · Ruina Stoneheart · Fred · Pola · Cezar · Berserker · MechaByter · MegaByter · VanByter No. 307 · VanByter No. 407 · CyberByters · InfectoByters
Forest Monsters: Mushlord · Baron Badwood · Dame Flora · Bramblina · Loggerhead · Deadwood & Knot · Elm of the Dark Realm
Sea Monsters: Behemoth of Brine · Marquis de Seaweed · Siren · Sharkerado · Mate Squiddybeard · Savage · Poop · Deck
Order of the Eight: Augustin Halbert · Reginald Brickland · Therence Richmond
Other: Aaron's father · Aaron's mother · Arthur Eaglewing · Axlina · Baron von Bludgeoneous · Cheddarton · Chopper · Coughmeyer · Cuthbert Richmond · Dustin Hoffmeier · Edvard Evanson · Gobbleton Rambley · Goldie Richmond · Hadda Hammerin · Jack Shields · Jebediah Hazard · Jestro cosplayer · Jestro cosplayer's grandmother · Jokes Knightly · Jurgen von Stroheim · Lance cosplayer · Mama Axl · Maynard · Mooper · Morty · Ned Knightly · Papa Axl · Princess · Ramsey · Robin's father · Roger the Scrubber · Roger van Nelsing · Royal Soldiers · Slab Rockowski · Trix Taylor · Woody Carverer